| 51 | A study of the mayfly parasite Spiriopsis adipophila, Arvy and Peters (1972) (=Sprininella adipophila, Arvy and Delage 1966) in Ephemera danica from the River Pang, a tributary of the River Thames |
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| 52 | Preliminary assessment of the ability of Restormel fish counter to enumerate the passage of migratory salmonids on the River Fowey : Cornwall Area Fisheries Science Team |
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| 53 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 1998-March 1999 |
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| 54 | Evaluation of FRONTIERS accumulation forecasts in the NRA Thames and North West regions : final report of the Joint Met |
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| 55 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2000 |
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| 56 | An investigation of ecological change in the rivers Kennet and Lambourn. Progress report for the period April 1999-March 2001 |
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| 57 | Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996 |
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| 58 | Options for transfer of water from the River Trent and reservoir storage at Great Bradley : technical summary of the feasibility report |
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| 59 | A report on the 1992 strategic stock assessment survey of the upper Eden catchment with particular reference to salmonids |
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| 60 | An investigation of ecological change in the rivers Kennet and Lambourn. Report for the period April 2000 - March 2001 |
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| 61 | An investigation to determine the source of high levels of gamma-HCH in the Newlyn River during summer 1989 |
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| 62 | A preliminary investigation into the extent of saline ingress into Curry Moor from the River Tone, January 1994 |
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| 63 | The Adur and Ouse catchment abstraction management strategy : consultation document |
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| 64 | Water quality investigations in the Newlyn river catchment |
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| 65 | Instream Flow Requirements of the River Wissey, Norfolk, Annex C - April 1993
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| 66 | Conservation and development of the River Eden spring salmon population |
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| 67 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
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| 68 | State of the environment report for Thames Region : first update 2001 |
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| 69 | The River Avon and its tributaries near Malmesbury : river management studies |
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| 70 | The Seaton, Looe and Fowey catchment management plan : action plan |
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| 71 | Continuous water quality monitoring results for the Carnon river |
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| 72 | River Great Ouse navigation : the Great Ouse your river for life |
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| 73 | Dioxins and the River Doe Lea : plain English report |
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| 74 | Valuing the Humber's environmental assets : proceedings of a seminar 15 November 2000 |
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| 75 | An investigation into the bathing water quality at Porthallow |
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